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What Is Event Delegation in JavaScript?

How do you implement event delegation in JavaScript?

The answer

Add one listener on the parent: parent.addEventListener('click', e => { if (e.target.matches('li')) handle(e.target); }). Check e.target to determine which child was clicked.

More FAQs in What Is Event Delegation in JavaScript?

It reduces the number of event listeners and improves performance.

Yes. Event delegation relies on event bubbling.

Yes. That is one of its major advantages.

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